Automatic pressure-regulator for electric machines.



M. FUSS.

AUTOMATIC PRESSURE REGULATOR FOR ELECTRIC MACHINES.

APPLICATION FILED MMLZI. I9II- 1,215,360. Patented 1*-eb.13,1917.

m russ, or 3mm, 6mm.

AUTOMATIC PRESSURE-REGULATOR FOB ELECTRIC MACHINES.

Specification of Letters Patent.

Application filed larch 21, 1911. Serial No. 616,018.

To all whom it may concern:

Be it known that I, Max Foss, a subject of the German Emperor, and resident of Stemmetzstrasse 30, Berlin, Germany, have invented certain new and useful Improvements in Automatic Pressure-Regulators for Electric Machines, of which the following 18 a specification.

his invention relates to automatic tension regulators for separately excited electrical generators, the exciting dynamo being provided with a variable shunt resistance in its field.

The invention has for its object to provide an automatic tension regulator comprising a fixed and a movable contact and operatlng by periodically placing in circuit and shortcircuiting a resistance in the field of the exciting dynamo, and wherein the movable regulating medium is a contact ,lever influenced by the exciter and generator-tensions, and which, under their influence, is

brought in and out of contact with the fixed contact.

According to the invention the two powers created by the exciter and gcneratortensions act independently of each other upon a floating contact lever which is arranged so that it can follow each of these powers or both together independently of each other,

and not only move against'the fixed contact but also be subject to alterations of position according to variations of these powers.

In order that the invention may be readily understood, reference is had to the accompanying drawings showing two mechanical expressions of the inventive idea differing but slightly from each other. The

drawings are intended to assist the description but not to define the limits of the invention.

Figure 1 is a diagrammatic illustration of the connections for a tension regulator without current compensation; and

Fig. 2 is a similar view of a pressure regulator with a compensating coil. In the connection diagram according to Fig. 1, 1 is a rotary current generator with the exciting winding 2, which is fed from he exciting dynamo 3. 4 is the field inding of the exciting dynamo 3 with its eld resistance 5. The'regulator consists of he exciting so1enoid'6- which influences the ironcore 9, and the lpressure solenoid 7 with the iron core 10. he iron cores 9 and 10 engage with a floating contact lever 11, be neath which the fixed contact 12 is arranged. The spring 13 engaging with the iron core 9 s opposed to the attraction of the exciting coil 6, while the damper 14 will prevent vibrations of the'iron core 10 in the pressure fOll 7. The manner of working is as "folows:-

Suppose the contact on the contact 12 touch each other, the resistance 5 is short-circuited and the tension in creases; then the solenoid 6 pulls the'core 9 up. Thus the contact on the lever- 11 leaves the contact 12 and the resistance'5 is placed in circuit with the winding/1f. [.10011- sequently the tension of the exciting-dynamo 3 decreases, the power of the 'solenoid 6 diminishes, and the contact onthe, lever 11 comes again into contact with the contact 12. Therefore, the resistance 5 is again short 'circuited and the tension should increase, but in this case, where, as presumed above, the generator tension the solenoid 7 will operate the core to interrupt the contact. The contact on the lever 11 is thereby periodically brought in and out of contact with the contact 12. If the generator is now loaded in such a degree that the tension decreases, then the core 10 falls and the same working is repeated in the opposite direction. The cores 9 and 10, and with them the lever 11, will consequently, due to different loads, take different positions.

In the connection diagram according to Fig. 2 the arrangement. is practically the the lever 11 and is increased,

Patented Feb. 13, 191 7.

same as in Fig. 1 only besides the pressure pressure solenoid 7.

I claim 1. In combination, an electrical generator,

an exciter therefor having in' clrcult a variable resistance and an automatic tension regulator comprising electromagnetic means energized by the electrical condition of the exciter circuit and other electromagnetic means energized by the. electrical condition in the and break contact with the fixed contact for enerator circuit, a fixed contact and a floating contact member in circuit shunting the resistance in the exciting dynamo circuit, and connections between said member and said two named means whereby said exciter and generator circuits act independently of each other upon the floating member to make diil'erent floating positions of said member. :2. In comblnation, a source of current to be regulated, and a separate source of current associated therewith, a pair of contacts one of which is a floating member, electromagnetic means energized by the first-named source of current and other electromagnetic means energized by the other source of cur rent, and connections between said means and said member whereby said means are adapted to support said member in different floating positions while variations of current in said means enable said member to make and break contact with the fixed contact for different floating positions of said member.

3. In a regulator for dynamo electric ma chines, a. stationary contact, a movable arm coiiperating therewith to open and close a circuit, a solenoid, cally connected to said arm, a movable fulcrum for said arm, and another solenoid controlling the movements of said fulcrum.

4. In combination, a dynamo electric machine, a voltage regulator therefor comprising a stationary contact, a movable arm cooperating therewith to determine the excitation of said machine, means, serving as a movable fulcrum point for said arm, responsive to the terminal voltage of said machine, and means responsive to the excitationv of said machine for vibrating said arm around said fulcrum, thereby opening and closing said contacts.

5. In combination, a dynamo electric machine, a voltage regulator therefor comprising a stationary contact, a movable arm cooperating therewith intermediate the ends of the arm to determine the excitation of said machine, means, serving as a movablefulcrum point for one end of said arm, responsive to the terminal voltage of said machine, serving as a movable fulcrum point for the other eiid of said arm, responsive to 'the excitation of said machine, thereby openmg and closing said contacts.

6. An electrical regulator comprising c0- operating stationary and movable contact members, and actuating windings for the movable member energization of one of said windings being governed by the said contact members.

7. In combination, a source of current to be regulated and a separate source of current associated therewith, a pair of contact members, one of which is movable in two dlflt'erent manners, electromagnetic means energized a core therefor mechani- 5 A each of which may actuate the same independently of the other, the

by the first named source of current for moving said contact member in one of said manners and electromagnetic means energized by the other source of current for moving said contact member in the other of said manners.

8. In an automatic governor for electric circuits, the combination with a system of distribution, a generator adapted to supply current to said distributing system and a system for exciting said current generator, of a resistance in said excitin system, a member capable of movement in two different manners, two cooperating contact pieces electrically connected with said resistance, one of said contact pieces being stationary and the other movable and carried by said member, means placed under the control of said exciting system for moving said member in said one manner so as to periodically short-circuit and reinsert said resistance, and means placed under the control of said distributin system for moving said member in said ot er manner so as to vary the duration of the closing of contact in proportionto the duration of the opening.

9. An electrical regulator comprising cooperating contacts, a movable member actuating one of said contacts, means comprising a winding for actuating said member, means providing a fulcrum for said member, and another winding for actuating said fulcrum providing means.

10. An electrical regulator comprising a. stationary contact, a movable contact, a movable member actuating s'aid movable contact, means comprising a windin for actuating said member, means provi ing a fulcrum for said member, and another winding for actuating said fulcrum providing means.

11. In combination, a source 0 current to be regulated, and a separate source of current associated therewith, a pair of contacts one of which is a floating member, electromagnetic means energized by the first-named source of current, and other electroma etic means energized by the other source 0 current, and connections between said means and said member whereby said means are adapted to support said member in difi'erent floating positions while variations of current in said means enable said member to make and break contact with the fixed contact for different floating positions of said member. 12. The combination with a system of distribution, a generator adapted to sup 1y current to said distributing system, and a system for exciting said generator, of. a. regulator for said generator comprisin a resistance in said capable of movement in two diflerent manners, coo ratin contact pieces electrically connecte to sai resistance, one of said contact pieces being actuated by said member, means for moving said member in said one manner so as to periodically short-circuit exciting system, a-mem r and reinsert said resistance,- and means re- In testimony whereof I have signed my sponsive to an electrical condition of said name to this specification in presence of two distributing system for moving said memsubscribing witnesses.

ber in said other manner so as to vary the MAX FUSS. 5 duration of the closing of the contacts with Witnesses:

respect to the duration of the opening OSKAR ARENDT,

thereof. HENRY HASPER. 

